Embodiments of an ink tank are provided, which comprise an ink tank housing, at least one air vent disposed on the housing, and at least one RFID tag disposed on the housing, wherein the at lest one RFID tag is operable to communicate with an RFID reader. A first silicon germanium layer is formed on a semiconductor substrate. Each CD-ROM is further configured, if it is a first such CD-ROM being installed on the computer, to generate and store a configuration file that indicates which ones of the game characters should be activated. In the case of the finely focused beam, electron images of the scanned pattern directly yield a spot pattern image. Auxiliary power is taken off by a shaft driven by the high pressure turbine and, when idling, the efficiency of the low pressure turbine is degraded so as to enable the high pressure turbine to operate at a speed that is sufficient for delivering the required auxiliary power. One end of the driving lever has a pulley extending into the first opening unit to activate a locking bolt base connected to the locking bolt to move horizontally.